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AU573243B2 - Pollution detecting apparatus - Google Patents
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AU573243B2 - Pollution detecting apparatus - Google Patents

Pollution detecting apparatus

Info

Publication number
AU573243B2
AU573243B2 AU31841/84A AU3184184A AU573243B2 AU 573243 B2 AU573243 B2 AU 573243B2 AU 31841/84 A AU31841/84 A AU 31841/84A AU 3184184 A AU3184184 A AU 3184184A AU 573243 B2 AU573243 B2 AU 573243B2
Authority
AU
Australia
Prior art keywords
gain
stage
detecting apparatus
photocell
amplifier stage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
AU31841/84A
Other versions
AU3184184A (en
Inventor
Martin Terence Cole
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vision Systems Ltd
Original Assignee
Vision Systems Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vision Systems Ltd filed Critical Vision Systems Ltd
Publication of AU3184184A publication Critical patent/AU3184184A/en
Application granted granted Critical
Publication of AU573243B2 publication Critical patent/AU573243B2/en
Assigned to VISION SYSTEMS LIMITED reassignment VISION SYSTEMS LIMITED Alteration of Name(s) in Register under S187 Assignors: COLE, MARTIN TERENCE
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/18—Prevention or correction of operating errors
    • G08B29/20—Calibration, including self-calibrating arrangements
    • G08B29/24—Self-calibration, e.g. compensating for environmental drift or ageing of components
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device
    • G08B17/107—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device for detecting light-scattering due to smoke
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/18—Prevention or correction of operating errors
    • G08B29/185—Signal analysis techniques for reducing or preventing false alarms or for enhancing the reliability of the system
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
    • G08B17/113—Constructional details

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Business, Economics & Management (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Emergency Management (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Measurement Of Radiation (AREA)
  • Amplifiers (AREA)

Abstract

A light sensing apparatus comprising a solid-state photocell responsive to low levels of light connected to an impedance matching buffer stage, a gain controlled amplifier stage and an output amplifier stage; a gain control network controlled by a temperature sensor for receiving an amplified signal from said output stage, the gain being adjustable to compensate for temperature dependance of the photocell signal.
AU31841/84A 1983-08-12 1983-08-12 Pollution detecting apparatus Ceased AU573243B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPG082083 1983-08-12
AUPG0820 1983-08-12

Publications (2)

Publication Number Publication Date
AU3184184A AU3184184A (en) 1985-02-14
AU573243B2 true AU573243B2 (en) 1988-06-02

Family

ID=3770281

Family Applications (1)

Application Number Title Priority Date Filing Date
AU31841/84A Ceased AU573243B2 (en) 1983-08-12 1983-08-12 Pollution detecting apparatus

Country Status (9)

Country Link
US (1) US4665311A (en)
EP (1) EP0140502B1 (en)
JP (1) JPS60100022A (en)
KR (1) KR950002498B1 (en)
AT (1) ATE48044T1 (en)
AU (1) AU573243B2 (en)
CA (1) CA1252172A (en)
DE (1) DE3480500D1 (en)
NZ (1) NZ209184A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU651773B1 (en) * 1993-03-31 1994-07-28 Nohmi Bosai Ltd Smoke type fire detector
US7508313B2 (en) 2000-02-10 2009-03-24 Siemens Aktiengesellschaft Smoke detectors particularly ducted smoke detectors
US7551277B2 (en) 2003-10-23 2009-06-23 Siemens Schweiz Ag Particle monitors and method(s) therefor

Families Citing this family (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU577551B2 (en) * 1983-10-21 1988-09-29 Vision Systems Limited Improvements relating to smoke detection apparatus
JPH0820363B2 (en) * 1985-11-29 1996-03-04 ジエント リミテイド Fire detector
JPS62215848A (en) * 1986-03-18 1987-09-22 Hochiki Corp Sensing apparatus
SE8701872L (en) * 1987-05-06 1988-11-07 Diantek Ab OPTICAL DETECTOR
JPH02209029A (en) * 1989-02-09 1990-08-20 Toshiba Corp Automatic gain controller
JPH02123691U (en) * 1989-03-23 1990-10-11
GB8913773D0 (en) * 1989-06-15 1989-08-02 Fire Fighting Enterprises Uk L Particle detectors
EP0418411B1 (en) * 1989-09-19 1994-03-02 Siemens Aktiengesellschaft Fire alarm system with a combination sounder
GB9014015D0 (en) * 1990-06-23 1990-08-15 Dennis Peter N J Improvements in or relating to smoke detectors
WO1993008461A1 (en) * 1991-10-14 1993-04-29 I.E.I. Pty. Ltd. Improvements relating to a sampling chamber for a pollution detector
AU666881B2 (en) * 1991-10-14 1996-02-29 Vision Systems Limited Improvements relating to a sampling chamber for a pollution detector
GB2274333B (en) * 1993-01-07 1996-12-11 Hochiki Co Smoke detecting apparatus capable of detecting both smoke and fine particles
US5910854A (en) 1993-02-26 1999-06-08 Donnelly Corporation Electrochromic polymeric solid films, manufacturing electrochromic devices using such solid films, and processes for making such solid films and devices
US5668663A (en) 1994-05-05 1997-09-16 Donnelly Corporation Electrochromic mirrors and devices
FR2723235B1 (en) * 1994-07-29 1996-10-18 Lewiner Jacques FIRE DETECTION DEVICES INCLUDING A CORRECTION SENSOR
AUPN179995A0 (en) * 1995-03-17 1995-04-13 Vision Systems Limited Improvements relating to gas pollution detection equipment
US6891563B2 (en) 1996-05-22 2005-05-10 Donnelly Corporation Vehicular vision system
AUPN965896A0 (en) 1996-05-03 1996-05-30 Vision Products Pty Ltd The detection of airborne pollutants
US5926098A (en) * 1996-10-24 1999-07-20 Pittway Corporation Aspirated detector
US5764149A (en) * 1996-10-29 1998-06-09 Mcdonnell Douglas Corporation Enhanced capabilities of smoke detectors
US5910751A (en) * 1997-02-14 1999-06-08 International Business Machines Corporation Circuit arrangement and method with temperature dependent signal swing
US6124886A (en) 1997-08-25 2000-09-26 Donnelly Corporation Modular rearview mirror assembly
US8294975B2 (en) 1997-08-25 2012-10-23 Donnelly Corporation Automotive rearview mirror assembly
US6326613B1 (en) 1998-01-07 2001-12-04 Donnelly Corporation Vehicle interior mirror assembly adapted for containing a rain sensor
US6172613B1 (en) 1998-02-18 2001-01-09 Donnelly Corporation Rearview mirror assembly incorporating vehicle information display
US6445287B1 (en) 2000-02-28 2002-09-03 Donnelly Corporation Tire inflation assistance monitoring system
US8288711B2 (en) 1998-01-07 2012-10-16 Donnelly Corporation Interior rearview mirror system with forwardly-viewing camera and a control
US6329925B1 (en) 1999-11-24 2001-12-11 Donnelly Corporation Rearview mirror assembly with added feature modular display
US6693517B2 (en) 2000-04-21 2004-02-17 Donnelly Corporation Vehicle mirror assembly communicating wirelessly with vehicle accessories and occupants
US6477464B2 (en) 2000-03-09 2002-11-05 Donnelly Corporation Complete mirror-based global-positioning system (GPS) navigation solution
EP0987663A1 (en) * 1998-09-14 2000-03-22 Siemens Building Technologies AG Optical smoke detector according to the extinguish principle and method for compensating the temperature drift
US7167796B2 (en) 2000-03-09 2007-01-23 Donnelly Corporation Vehicle navigation system for use with a telematics system
US7195381B2 (en) 2001-01-23 2007-03-27 Donnelly Corporation Vehicle interior LED lighting system
US7370983B2 (en) 2000-03-02 2008-05-13 Donnelly Corporation Interior mirror assembly with display
WO2001064481A2 (en) 2000-03-02 2001-09-07 Donnelly Corporation Video mirror systems incorporating an accessory module
US7581859B2 (en) 2005-09-14 2009-09-01 Donnelly Corp. Display device for exterior rearview mirror
US7255451B2 (en) 2002-09-20 2007-08-14 Donnelly Corporation Electro-optic mirror cell
US6918674B2 (en) 2002-05-03 2005-07-19 Donnelly Corporation Vehicle rearview mirror system
WO2003105099A1 (en) 2002-06-06 2003-12-18 Donnelly Corporation Interior rearview mirror system with compass
US7329013B2 (en) 2002-06-06 2008-02-12 Donnelly Corporation Interior rearview mirror system with compass
US7310177B2 (en) 2002-09-20 2007-12-18 Donnelly Corporation Electro-optic reflective element assembly
US7274501B2 (en) 2002-09-20 2007-09-25 Donnelly Corporation Mirror reflective element assembly
US7289037B2 (en) 2003-05-19 2007-10-30 Donnelly Corporation Mirror assembly for vehicle
US7446924B2 (en) 2003-10-02 2008-11-04 Donnelly Corporation Mirror reflective element assembly including electronic component
US7308341B2 (en) 2003-10-14 2007-12-11 Donnelly Corporation Vehicle communication system
EP1883855B1 (en) 2005-05-16 2011-07-20 Donnelly Corporation Vehicle mirror assembly with indicia at reflective element
CN101535087B (en) * 2005-11-01 2013-05-15 唐纳利公司 Interior rearview mirror with display
US20100099130A1 (en) * 2006-10-25 2010-04-22 Placor Inc. Methods and devices for monitoring platelet function
US7656302B2 (en) * 2006-11-20 2010-02-02 Honeywell International Inc. Sensing chamber with enhanced ambient atmospheric flow
US8154418B2 (en) 2008-03-31 2012-04-10 Magna Mirrors Of America, Inc. Interior rearview mirror system
US9140646B2 (en) 2012-04-29 2015-09-22 Valor Fire Safety, Llc Smoke detector with external sampling volume using two different wavelengths and ambient light detection for measurement correction
US8907802B2 (en) 2012-04-29 2014-12-09 Valor Fire Safety, Llc Smoke detector with external sampling volume and ambient light rejection
US8952821B2 (en) 2012-04-29 2015-02-10 Valor Fire Safety, Llc Smoke detector utilizing ambient-light sensor, external sampling volume, and internally reflected light
KR20160079057A (en) 2013-10-30 2016-07-05 발로르 파이어 세이프티, 엘엘씨 Smoke detector with external sampling volume and ambient light rejection
CN111263958B (en) 2017-10-30 2022-05-27 开利公司 Compensator in detector device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3480781A (en) * 1967-09-15 1969-11-25 Westinghouse Electric Corp Temperature compensated solar cell light sensor
US3588535A (en) * 1967-08-22 1971-06-28 Westinghouse Electric Corp Control circuit with temperature compensation

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3231748A (en) * 1961-10-30 1966-01-25 Fyr Fyter Co Smoke detector
US3396387A (en) * 1962-07-24 1968-08-06 Kidde & Co Walter Supervised apparatus for detecting suspended matter in fluids
GB1179531A (en) * 1967-04-21 1970-01-28 Pyrotector Inc Particle Detecting Devices
US3928843A (en) * 1974-06-24 1975-12-23 Optical Coating Laboratory Inc Dual channel infrared intrusion alarm system
JPS51141692A (en) * 1975-05-31 1976-12-06 Hamada Kikai Sekkei Jimusho:Kk Lubricating oil deterioration test and instrument therefor
JPS5243674U (en) * 1975-09-23 1977-03-28
JPS5289985U (en) * 1975-12-27 1977-07-05
JPS52106054U (en) * 1976-02-09 1977-08-12
CH621640A5 (en) * 1977-11-21 1981-02-13 Cerberus Ag
US4438348A (en) * 1978-10-06 1984-03-20 Harris Corporation Temperature compensated avalanche photodiode optical receiver circuit
DE3146110A1 (en) * 1980-11-24 1982-06-16 Hekatron GmbH, 7811 Sulzburg "OPTICAL SMOKE DETECTOR"
GB2095821B (en) * 1981-03-17 1985-08-21 Malinowski William J Self-calibrating smoke detector and method
JPS57192487U (en) * 1981-05-29 1982-12-06
JPS5915733B2 (en) * 1981-06-24 1984-04-11 東芝機械株式会社 Method of manufacturing alloy wheels for vehicles

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3588535A (en) * 1967-08-22 1971-06-28 Westinghouse Electric Corp Control circuit with temperature compensation
US3480781A (en) * 1967-09-15 1969-11-25 Westinghouse Electric Corp Temperature compensated solar cell light sensor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU651773B1 (en) * 1993-03-31 1994-07-28 Nohmi Bosai Ltd Smoke type fire detector
US7508313B2 (en) 2000-02-10 2009-03-24 Siemens Aktiengesellschaft Smoke detectors particularly ducted smoke detectors
US7551277B2 (en) 2003-10-23 2009-06-23 Siemens Schweiz Ag Particle monitors and method(s) therefor
US7724367B2 (en) 2003-10-23 2010-05-25 Siemens Schweiz Ag Particle monitors and method(s) therefor
US7738098B2 (en) 2003-10-23 2010-06-15 Siemens Schweiz Ag Particle monitors and method(s) therefor

Also Published As

Publication number Publication date
KR950002498B1 (en) 1995-03-20
DE3480500D1 (en) 1989-12-21
JPS60100022A (en) 1985-06-03
ATE48044T1 (en) 1989-12-15
EP0140502A1 (en) 1985-05-08
AU3184184A (en) 1985-02-14
CA1252172A (en) 1989-04-04
EP0140502B1 (en) 1989-11-15
KR850001585A (en) 1985-03-30
US4665311A (en) 1987-05-12
NZ209184A (en) 1988-07-28
JPH0449645B2 (en) 1992-08-12

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Legal Events

Date Code Title Description
MK14 Patent ceased section 143(a) (annual fees not paid) or expired